APPARATUS AND METHODS FOR WINDING SUPPORTS FOR COILS AND SINGLE POLES OF CORES OF DYNAMO ELECTRIC MACHINES

摘要

Apparatus and method for winding at least one electric wire W on a coil support (10) of a core of a dynamo electric by using a wire dispensing member (19) for dispensing the wire, the dispensing member having a passage portion (22) for the wire and an exit (23) from where the wire reaches the coil support (10) during winding, means (21, 25) for rotating the coil support with respect to the dispensing member (19) to wind the wire onto the coil support; the wire WE extending from the dispensing member to the coil support having an angular orientation with respect to the exit (23). It is foreseen to provide a relative movement of the dispensing member (19) with respect to the coil support (10) to maintain the angular orientation constant during winding. Furthermore it is foreseen to press on a portion (WP) of wire wound on the coil support (10) where the portion of wire (WP) is located immediately adjacent to a portion of wire that still has to be wound on the coil support (10). Engaging occurs also of the wire portion (WP) wound on the coils support and that extends to the dispensing member (19) when passage from one turn to another occurs for the stratification; the engagement occurring in opposition to the direction (Z') of stratification of the wire. Pressing on the wire (W) can be accomplished in a direction (K) having an angle (E) that is more than zero and not perpendicular to an axis of the coil support.